Finding the Third Proportional to 918,328.50 and 1,986,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   918,328.50 : 1,986,250.50 = 1,986,250.50 : x
2. Step 2: Convert to fraction form
   918,328.50/1,986,250.50 = 1,986,250.50/x
3. Step 3: Cross multiply
   918,328.50x = 1,986,250.50 × 1,986,250.50
4. Step 4: Simplify right side
   918,328.50x = 3,945,191,048,750.25
5. Step 5: Solve for x
   x = 3,945,191,048,750.25/918,328.50
6. Step 6: Final answer
   x = 4,296,056.42